ST7FLITEU05M6 STMicroelectronics, ST7FLITEU05M6 Datasheet - Page 32

• Manufacturer Part Number: ST7FLITEU05M6
• Description: MCU 8BIT SGL VOLT FLASH SO-8
• Manufacturer: STMicroelectronics
• Series: ST7r

Specifications of ST7FLITEU05M6

• Core Processor: ST7
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 5
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Processor Series: ST7FLITEUx
• Core: ST7
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: ICC
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST7FUS-PRIMER, ST7FLITE-SK/RAIS, ST7FLITU0-D/RAIS, STX-RLINK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 5 Channel
• For Use With: 497-5858 - EVAL BOARD PLAYBACK ST7FLITE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

Supply, reset and clock management
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7.1
7.2
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Supply, reset and clock management
The device includes a range of utility features for securing the application in critical
situations (for example in case of a power brown-out), and reducing the number of external
components.
Main features
●
●
●
Internal RC oscillator adjustment
The ST7 contains an internal RC oscillator with a specific accuracy for a given device,
temperature and voltage. It can be selected as the start up clock through the CKSEL[1:0]
option bits (see
required in the application. This is done by software writing a 10-bit calibration value in the
RCCR (RC Control Register) and in the bits [6:5] in the SICSR (SI control status register).
Whenever the microcontroller is reset, the RCCR returns to its default value (FFh), i.e. each
time the device is reset, the calibration value must be loaded in the RCCR. Predefined
calibration values are stored in Flash memory for 3.3 and 5 V V
as shown in the following table.
Table 5.
1. DEE0h, DEE1h, DEE2h and DEE3h are located in a reserved area but are special bytes containing also
the RC calibration values which are read-accessible only in user mode. If all the Flash space (including the
RC calibration value locations) has been erased (after the readout protection removal), then the RC
calibration values can still be obtained through these two addresses.
Clock management
–
–
Reset sequence manager (RSM)
System integrity management (SI)
–
–
RCCRH0
RCCRH1
RCCRL0
RCCRL1
RCCR
8 MHz internal RC oscillator (enabled by option byte)
External clock input (enabled by option byte)
Main supply low voltage detection (LVD) with reset generation (enabled by option
byte)
Auxiliary voltage detector (AVD) with interrupt capability for monitoring the main
supply
Predefined RC oscillator calibration values
Section 15.1 on page
f
f
Conditions
V
RC
RC
V
T
T
DD
A
A
DD
= 25 °C
= 25 °C
= 8 MHz
= 8 MHz
= 3.3 V
= 5 V
127). It must be calibrated to obtain the frequency
ST7LITEU05/ST7LITEU09 address
DEE0h
DEE1h
DEE2h
DEE3h
DD
ST7LITEU05 ST7LITEU09
(1)
(1)
(1)
(1)
supply voltages at 25 °C,
(CR[9:2] bits)
(CR[1:0] bits)
(CR[9:2] bits)
(CR[1:0] bits)